In article ,
Jose wrote:

If it's not a task or part of a task, then he can't be failed for it.
An applicant has to fail a TASK, in order to fail the test.
So what task did he fail?

I don't know. But let me ask you this - suppose you were the examiner,
and the ILS receiver =actually= failed during the approach, and the
applicant did not catch it, but continued to fly the needles (which are
now centered and flagged), and just by luck arrives at the MDA right in
front of the runway... would you fail the applicant for this? What
"task" would you fail him on?

How about:

V. AREA OF OPERATION: NAVIGATION SYSTEMS
A. TASK: INTERCEPTING AND TRACKING NAVIGATIONAL SYSTEMS AND DME ARCS
9. Recognizes navigational receiver or facility failure, and when required,
reports the failure to ATC.

or, if you prefer:

VI.AREA OF OPERATION: INSTRUMENT APPROACH PROCEDURES
B. TASK: PRECISION APPROACH (PA)
9. Selects, tunes, identifies, and monitors the operational status of
ground and airplane navigation equipment used for the approach.